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Diffstat (limited to 'arch/ppc64/kernel/prom.c')
-rw-r--r--arch/ppc64/kernel/prom.c24
1 files changed, 20 insertions, 4 deletions
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index 0e8961dea3b..3402fbee62c 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -31,6 +31,7 @@
#include <linux/initrd.h>
#include <linux/bitops.h>
#include <linux/module.h>
+#include <linux/module.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -1865,17 +1866,32 @@ get_property(struct device_node *np, const char *name, int *lenp)
EXPORT_SYMBOL(get_property);
/*
- * Add a property to a node
+ * Add a property to a node.
*/
-void
+int
prom_add_property(struct device_node* np, struct property* prop)
{
- struct property **next = &np->properties;
+ struct property **next;
prop->next = NULL;
- while (*next)
+ write_lock(&devtree_lock);
+ next = &np->properties;
+ while (*next) {
+ if (strcmp(prop->name, (*next)->name) == 0) {
+ /* duplicate ! don't insert it */
+ write_unlock(&devtree_lock);
+ return -1;
+ }
next = &(*next)->next;
+ }
*next = prop;
+ write_unlock(&devtree_lock);
+
+ /* try to add to proc as well if it was initialized */
+ if (np->pde)
+ proc_device_tree_add_prop(np->pde, prop);
+
+ return 0;
}
#if 0